Jump'in Para Black Synthetic Sheepskin BootsWe love these boots because it's made with easy to work with natural rubber and sheepskin lining. One of the Jump'In original products, the Para Boots are made of natural rubber that makes them easy to manipulate, to put on and clean. They are flexible and adapt very well to a number of horses' legs without bothering the horse. Each boot is lined with a very soft synthetic sheepskin and fastens with double velcro. Pair Natural rubber Flexible Double